AMD Radeon R9 M290X Mac Edition vs AMD Radeon HD 6990M
GPU · Specs Compare
Graphics Card
Release Date
Nov 2014
Jul 2011
Generation
Crystal System
Vancouver
Type
Mobile
Mobile
Bus Interface
PCIe 3.0 x16
MXM-B (3.0)
Clock Speeds
Base Clock
850 MHz
—
Boost Clock
975 MHz
—
Memory Clock
1365 MHz
900 MHz
Memory
Memory Size
2GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
256bit
Bandwidth
174.7GB/s
115.2GB/s
Render Config
Compute Units
16
14
Shading Units
1024
1120
TMUs
64
56
ROPs
32
32
L1 Cache
16 KB (per CU)
8 KB (per CU)
L2 Cache
512 KB
512 KB
Theoretical Performance
Pixel Rate
31.20 GPixel/s
22.88 GPixel/s
Texture Rate
62.40 GTexel/s
40.04 GTexel/s
FP32 (float)
1.997 TFLOPS
1.602 TFLOPS
FP64 (double)
124.8 GFLOPS
—
Graphics Processor
GPU Name
Pitcairn
Blackcomb
GPU Variant
Pitcairn PRO(215-0828062)
Blackcomb XTX(216-0811030)
Architecture
GCN 1.0
TeraScale 2
Foundry
TSMC
TSMC
Process Size
28 nm
40 nm
Transistors
2.8 billion
1.7 billion
Die Size
212 mm²
212 mm²
Board Design
TDP
80W
100W
Outputs
No outputs
No outputs
Power Connectors
None
None
Graphics Features
DirectX
12 (11_1)
11.2 (11_0)
OpenGL
4.6
4.4
OpenCL
1.2
1.2
Vulkan
1.2
N/A
Shader Model
5.1
5.0
▲ Specs Compare
Data sourced from official specifications and benchmark tests.